import matplotlib.pyplot as plt
import numpy
xpoints = numpy.array([0, 60,123])
ypoints = numpy.array([0, 240,124])
plt.plot(xpoints, ypoints,marker='o',linestyle='dotted')# 'o' 绘制圆点 标记
plt.grid()
"""
o * x p  
设置点 线 颜色等等
marker  
linestyle  

"""
plt.show()
